This one is exquisite. The only change I’d made would be getting the snake’s head to somehow reach outside the frame as the grass and tip of the tail do. I feel the head should be the standout, not the other two as much.

A cool variation you might try: Have the pattern on the snake match the grass shapes scattered around the frame. Then the snake in the grass would be trickier to see. You follow? You’d draw patches of grass along curving/sweeping lines across the page and then slip the snake’s face in at the end of one of those lines.